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US 2022/0066301 A1Published application
Wavelength conversion element, light source apparatus, and image projection apparatus
AssigneeCanon Kabushiki Kaisha
InventorsHiroshi Yamamoto, Yuya Kurata, Shigefumi Watanabe
Life of this patent
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Abstract
A wavelength conversion element made of a sintered body includes a fluorescent member, a light-transmitting member having a thermal conductivity higher than that of the fluorescent member, and a light-scattering member having a refractive index higher than that of the light-transmitting member, and an average particle radius of 75 nm or more and 200 nm or less.
Claims10
A wavelength conversion element made of a sintered body, the wavelength conversion element comprising:
- a fluorescent member;
- a light-transmitting member having a thermal conductivity higher than that of the fluorescent member;
- and
- a light-scattering member having a refractive index higher than that of the light-transmitting member, and an average particle radius of 75 nm or more and 200 nm or less.
1 more element
A light source apparatus comprising:
- a wavelength conversion element made of a sintered body;
- and
- a light source configured to excite the wavelength conversion element, and
- wherein the wavelength conversion element includes:
- a fluorescent member;
- a light-transmitting member having a thermal conductivity higher than that of the fluorescent member;
- and
- a light-scattering member having a refractive index higher than that of the light-transmitting member, and an average particle radius of 75 nm or more and 200 nm or less.
5 more elements
An image projection apparatus comprising:
- a light source apparatus;
- and
- a light modulation element configured to modulate light from the light source apparatus to form image light based on image information,
- wherein the light source apparatus includes:
- a wavelength conversion element made of a sintered body;
- and
- a light source configured to excite the wavelength conversion element, and
- wherein the wavelength conversion element includes:
- a fluorescent member;
- a light-transmitting member having a thermal conductivity higher than that of the fluorescent member;
- and
- a light-scattering member having a refractive index higher than that of the light-transmitting member, and an average particle radius of 75 nm or more and 200 nm or less.
9 more elements
Dependencies are inferred from the claim text.